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When hydrogen molecules decompose into i...

When hydrogen molecules decompose into its atoms, which conditions give the maximum yield of hydrogen atoms ?

A

High temperature and low pressure

B

Low temperature and high pressure

C

High temperature and high pressure

D

Low temperature and low pressure

Text Solution

Verified by Experts

The correct Answer is:
A
Consider the equilibrium expression
`H_(2)(g)+"Heat" hArr 2H(g)`
It is an endothermic equilibrium involving increase in the number of moles in the gas phase. Thus, according to Le Chatelier's principle, equilibrium in the forward direction will be favoured high temperature and low pressure.
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